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JPH0842506A |
PURPOSE: To provide an electropneumatic converter whose part items are small in number, which is excellent in assembling and a disposing space, can attain size reduction and carry out zero point adjustment with a high accuracy by coarse ...
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JPH0842505A |
PURPOSE: To lower the required processing accuracy for parts by maintaining a mechanical balance through the fulcrum of a beam in an electropneumatic converter with a simple structure for elimination of inclining characteristics due to a...
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JPH0811001B2 |
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JPH0810001B2 |
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JPH085393B2 |
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JPH0816252A |
PURPOSE: To provide a hydraulic system whose response time is short and whose operation is stable. CONSTITUTION: The controller of a hydraulic sliding valve 1 is provided. The hydraulic valve 1 is operated by a motor and a pulling means ...
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JPH084055A |
PURPOSE: To switch over the regeneration and non-regeneration of a regeneration valve according to the amount of operation without using pilot pressure. CONSTITUTION: When the amount of operation of an operation lever 23 in Y direction i...
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JPH084703A |
PURPOSE: To secure a certain oil quantity even during a power failure, etc., so as to perform a specified function by constructing a liquid pressure servo device in such a manner that the neutral point of a control valve for outputting a...
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JPH084708A |
PURPOSE: To surely prevent incursion of rain water, moisture, etc., from an exhaust port into a case and corrosion and reduction in functions of a mechanism and parts in the case so as to improve durability and reliability of an operator...
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JPH07122442B2 |
The apparatus disclosed herein provides controlled operation of a pneumatic actuator (11) by effecting charging and discharging of the actuator through an intermediate step volume (31), the pressure in the step volume being regulated as ...
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JPH07117158B2 |
A hydraulic servo cylinder device for controlling a speed reduction ratio or clutch operation in a continuously variable transmission comprises cylinder and a piston slidably fitted in a cylinder chamber of the cylinder. The cylinder cha...
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JPH07117083B2 |
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JPH07117086B2 |
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JPH07317701A |
PURPOSE: To enable motion to be changed at an optional point in a cylinder stroke by attaching electromagnetic sensors on a cylinder outer part, and feeding positional information of the cylinder back into a calculating device. CONSTITUT...
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JPH07112836B2 |
A hydraulic control system for aircraft is disclosed, which has a flight maneuver system (1) mounted on the aircraft and provided with a maneuver signal input system (6) for controlling the aircraft in dependency on flight conditions and...
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JPH07113854B2 |
An electrohydraulic system includes a plurality of electrohydraulic devices (30,32,34,36) individually controlled by microprocessor-based control electronics. The device controllers (30B,32B,34B,36B) are connected in common by a bidirect...
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JPH07310562A |
PURPOSE: To enable inboard controlling pneumatic pressure to be utilized as a drive power source of a hydraulic cylinder so as to reduce the number of parts and decrease cost by supplying inboard controlling pneumatic pressure to a pneum...
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JPH07104243B2 |
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JPH0799161B2 |
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JPH0799164B2 |
A pilot-controlled proportional throttle valve is provided having pilot oil passage means provided in the spool of said throttle valve.
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JPH0799163B2 |
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JPH0799162B2 |
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JPH07269505A |
PURPOSE: To provide the electropneumatic positioner which has excellent responsiveness at the times of both an input rising and an input falling time, and also facilitates tuning. CONSTITUTION: The electropneumatic positioner is provided...
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JPH0795243B2 |
A power servo system which includes an actuator (12) coupled to a load and receives an input command signal (R) indicative of desired motion at the load. A sample-data control system (20) receives and samples input signals (R, Y) indicat...
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JPH0792085B2 |
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JPH07259801A |
PURPOSE: To provide an air servocylinder system which can realize excellent position precision, the speed precision of super slow speed drive and followability. CONSTITUTION: In the case of an air servocylinder system having a pneumatic ...
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JPH07259719A |
PURPOSE: To obtain a speed change mechanism of a swash plate type hydraulic motor which can vary the rotational speed of a hydraulic motor during its rotation by means of swash plates having different inclination angles while adopting a ...
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JPH07509048A |
The hydraulic drive control uses an electrically-controlled valve determining the quantity of hydraulic fluid supplied to the hydraulic drive in dependence on an electrical signal supplied by a processor. The processor has a high process...
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JPH0788841B2 |
An electrohydraulic control system for a hydraulic working cylinder, for example of a press, the piston of which has a main working surface and a smaller working surface on the rod side. A low-pressure circuit is provided for the feed or...
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JPH0784884B2 |
A load sensing circuit of a load responsive direction control valve including a device for sensing load pressure signals identifying those load pressure signals as positive or negative and transmitting those identified positive or negati...
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JPH07233801A |
PURPOSE: To provide excellent response characteristic even in the case where control deviation is small and a required flow rate is also small by deciding the number of servo valves driven corresponding to the flow rate. CONSTITUTION: A ...
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JPH0776561B2 |
A reel speed valve assembly for controlling the speed of a combine reel including a double acting compensator valve (600), a proportional control valve (700), and a relief valve (900), a load sense valve, the reel speed valve may be oper...
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JPH0776576B2 |
PURPOSE:To promote an early return to the reference position as well as to prevent any chattering from occurring by varying the suction and exhaust gas quantity of an input/output port according to magnitude of dislocation. CONSTITUTION:...
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JPH07190001A |
PURPOSE: To improve maintainability and operability by making it possible to change the direction of the feedback shaft of a positioner. CONSTITUTION: A holder main body 441 is attached to a feedback shaft holder attaching surface 42 so ...
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JPH0768961B2 |
PCT No. PCT/CH88/00174 Sec. 371 Date Jun. 20, 1989 Sec. 102(e) Date Jun. 20, 1989 PCT Filed Sep. 27, 1988 PCT Pub. No. WO89/03939 PCT Pub. Date May 5, 1989.A linear drive comprises a hydraulic unit (1), a control valve (5) and an actuati...
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JPH0765655B2 |
A hydraulic servomechanism comprises a basic body having an axial hole formed therein, a stationary element provided on the outer peripheral surface of the basic body at a predetermined location, a sliding element fitted on the outer per...
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JPH07180701A |
PURPOSE: To easily perform zero-span adjusting in an electropneumatic positioner which controls an opening of an adjusting valve corresponding to an input signal. CONSTITUTION: A position sensor 2 detects a lifting position corresponding...
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JPH0762611B2 |
Known linear position sensors suffer from inaccuracies owing to severe environmental conditions, such as temperature and humidity. Physical damage to sensors exposed to rugged work conditions is a limiting factor in the expected life of ...
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JPH0762360B2 |
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JPH07167103A |
PURPOSE: To decrease power consumption in an electric-pneumatic converter and also suppress compressed air consumption. CONSTITUTION: A coil 68a is excited by an ON-signal of pulse signals inputted to a balance part 30a, and magnet flux ...
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JPH0725442Y2 |
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JPH07144651A |
PURPOSE: To provide a method and a device for conducting fine adjustment and post-adjustment to a power steering unit after completion of preassemblage. CONSTITUTION: A valve sleeve 11 is rotated about a common central axial line to an o...
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JPH0724596Y2 |
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JPH0724641Y2 |
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JPH07141002A |
PURPOSE: To correct a characteristic curve based on an actually measured value when the difference between the actually measured value of a controlled system received in online made and a target value calculated from the built-in charact...
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JPH0747961B2 |
A control system for a two way acting hydraulic servomotor wherein the servomotor is connected in the diagonal of a bridge circuit that includes four magnetic valves with a pair of the valves being normally open in a non-energized condit...
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JPH0747444B2 |
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JPH07504523A |
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JPH07127603A |
PURPOSE: To improve positioning accuracy as well as to simplify the entire structure of a device by moving a moving workpiece by using a system control ler capable of outputting data signals in compliance with control purposes of a contr...
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JPH07116802A |
PURPOSE: To execute a stable control having very good precision by adopting a feed forward compensation and having a learning function in consideration of the difference between an aimed waveform and the actual oscillating waveform. CONS...
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